Apparently if someone genetically engineered a potato with pig genes (to make it extra tasty when roasted, presumably), it would be one but not the other, due to philosophical differences between Judaism and Islam.
I don’t remember which one, but apparently the question of whether the genetics of a species define its nature for religious reasons is where Judaism and Islam diverge. One would hold that, if no actual pigs were involved, a potato with pig genes is just a potato and thus allowed, and the other would hold that the pig genes make it sufficiently porcine to be forbidden.